Method: Trailblazer::Macro.Nested

Defined in:
lib/trailblazer/macro/nested.rb

.Nested(callable, id: Macro.id_for(callable, macro: :Nested, hint: callable), auto_wire: []) ⇒ Object

Nested macro. DISCUSS: rename auto_wire => static



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# File 'lib/trailblazer/macro/nested.rb', line 5

def self.Nested(callable, id: Macro.id_for(callable, macro: :Nested, hint: callable), auto_wire: [])
  # Warn developers when they confuse Nested with Subprocess (for simple nesting, without a dynamic decider).
  if callable.is_a?(Class) && callable < Nested.operation_class
    caller_locations = caller_locations(1, 2)
    caller_location = caller_locations[0].to_s =~ /forwardable/ ? caller_locations[1] : caller_locations[0]

    Activity::Deprecate.warn caller_location,
      "Using the `Nested()` macro without a dynamic decider is deprecated.\n" \
      "To simply nest an activity or operation, replace `Nested(#{callable})` with `Subprocess(#{callable})`.\n" \
      "Check the Subprocess API docs to learn more about nesting: https://trailblazer.to/2.1/docs/activity.html#activity-wiring-api-subprocess"

    return Activity::Railway.Subprocess(callable)
  end

  task =
    if auto_wire.any?
      Nested.Static(callable, id: id, auto_wire: auto_wire)
    else # no {auto_wire}
      Nested.Dynamic(callable, id: id)
    end

  # |-- Nested.compute_nested_activity...Trailblazer::Macro::Nested::Decider
  # `-- task_wrap.call_task..............Method
  merge = [
    [Nested::Decider.new(callable), id: "Nested.compute_nested_activity", prepend: "task_wrap.call_task"],
  ]

  task_wrap_extension = Activity::TaskWrap::Extension::WrapStatic.new(extension: Activity::TaskWrap::Extension(*merge))

  Activity::Railway.Subprocess(task).merge( # FIXME: allow this directly in Subprocess
    id:         id,
    extensions: [task_wrap_extension],
  )
end